//**********************************************************************
//	PP2_2.java		Author:GK
//
//	Enter three integers and output the average.
//**********************************************************************

import java.util.Scanner;

public class PP2_2
{
	public static void main(String[] args)
	{
		int a;
		int b;
		int c;
		double average;

		Scanner scan = new Scanner(System.in);

		System.out.print("输入三个整数：");
		a = scan.nextInt();
		b = scan.nextInt();
		c = scan.nextInt();

		average=(a + b + c)/3.0;

		System.out.println("平均值为：" + average);
	}
}
